Fig. 8.

(a)–(c) are images captured from healthy kidney, where proximal tubules are uniform in size, (d)–(f) are images captured from midstage CKD kidney, where certain percentages of proximal tubules appear shrunk and certain percentages of proximal tubules appear enlarged, (g)–(i) are images captured from late-stage CKD kidney, where proximal tubules in some cross sections appear further enlarged and in some other cross sections disappeared due to shrunk to extreme small sizes.